Strawberry plant variety named ‘DrisStrawFiftyTwo’

ABSTRACT

A new and distinct variety of strawberry plant named ‘DrisStrawFiftyTwo’ particularly characterized by its compact plant habit, early production, and high yield, is disclosed.

Latin name:

Botanical classification: Fragaria x ananassa.

Varietal denomination: The varietal denomination of the claimed variety of strawberry plant is ‘DrisStrawFiftyTwo’.

BACKGROUND OF THE INVENTION

Cultivated strawberry is a hybrid species of the genus Fragaria that is grown worldwide for its fruit. Modern strawberry was first bred in Brittany, France, in the 18^(th) century by crossing Fragaria virginiana with Fragaria chiloensis. Strawberry fruit is an aggregate accessory fruit, with the fleshy part of the fruit being derived from the receptacle that holds the ovaries.

Strawberry varieties vary widely in color, size, shape, flavor, season of ripening, degree of fertility, and susceptibility to disease. Certain varieties vary in foliage, and some vary in the relative development of their reproductive organs. Typically, strawberry flowers appear hermaphroditic in structure, but function as either male or female. Generally, commercial production of strawberry plants involves propagation from runners and distribution as either plugs or bare root plants. Cultivation is either perennial or annual plasticulture. During the off season, strawberries can also be produced in greenhouses.

Strawberry fruit is widely appreciated for its characteristic bright red color, aroma, juicy texture, and sweetness. Strawberry fruit is a popular fruit that is generally consumed either fresh or in prepared foods, such as preserves and baked goods.

Strawberry is an important and valuable fruit crop. Accordingly, there is a need for new varieties of strawberry plants. In particular, there is a need for improved varieties of strawberry plant that are stable, high yielding, and agronomically sound.

SUMMARY OF THE INVENTION

In order to meet these needs, the present invention is directed to an improved variety of strawberry plant. In particular, the invention relates to a new and distinct variety of strawberry plant (Fragaria x ananassa), which has been denominated as ‘DrisStrawFiftyTwo’.

Strawberry plant variety ‘DrisStrawFiftyTwo’ was discovered in Hillsborough County, Fla. in February of 2012 and originated from a cross between the proprietary female parent ‘9S123’ (unpatented) and the proprietary male parent ‘140R374’ (unpatented). A single plant was selected and asexually propagated via stolons in Shasta County, Calif. in 2012.

‘DrisStrawFiftyTwo’ was subsequently asexually propagated via stolons, and underwent further testing at a farm in Huelva, Spain for two years (2015 to 2016). The present invention has been found to be stable and reproduce true to type through successive asexual propagations via stolons and tissue culture.

‘DrisStrawFiftyTwo’ exhibits the following distinguishing characteristics when grown under normal horticultural practices in Huelva, Spain:

-   -   1. Small, vivid red fruit;     -   2. Small plants with a bearing that is not everbearing and not         remontant, and that produces a high amount of fruit per fruiting         truss; and     -   3. Early harvest maturity.

‘DrisStrawFiftyTwo’ was selected for its compact plant habit, early production, and high yield.

DESCRIPTION OF THE DRAWINGS

This new strawberry plant is illustrated by the accompanying photographs which show fruit and leaves of the plant. The colors shown are as true as can be reasonably obtained by conventional photographic procedures. The photographs are of plants that are eight months old.

FIG. 1 illustrates whole fruit of variety ‘DrisStrawFiftyTwo’.

FIG. 2 illustrates longitudinal cross-sections of fruit of variety ‘DrisStrawFiftyTwo’.

FIG. 3A shows the lower surface of a leaf of variety ‘DrisStrawFiftyTwo’ with three leaflets. FIG. 3B shows the upper surface of a leaf of variety ‘DrisStrawFiftyTwo’ with three leaflets.

DESCRIPTION OF THE NEW VARIETY

The following detailed descriptions set forth the distinctive characteristics of ‘DrisStrawFiftyTwo’. The data which define these characteristics is based on observations taken in Huelva, Spain from 2015 to 2016. This description is in accordance with UPOV terminology. Color designations, color descriptions, and other phenotypical descriptions may deviate from the stated values and descriptions depending upon variation in environmental, seasonal, climatic, and cultural conditions. ‘DrisStrawFiftyTwo’ has not been observed under all possible environmental conditions. The botanical description of ‘DrisStrawFiftyTwo’ was taken from eight month old plants. The indicated values represent averages calculated from measurements of several plants. Color references are primarily to The R.H.S. Colour Chart of The Royal Horticultural Society of London (R.H.S.) (2007 edition). Descriptive terminology follows the Plant Identification Terminology, An Illustrated Glossary, 2^(nd) edition by James G. Harris and Melinda Woolf Harris, unless where otherwise defined.

DETAILED BOTANICAL DESCRIPTION OF THE PLANT

-   Classification:     -   -   Species.—Fragaria x ananassa.         -   Common name.—Strawberry.         -   Denomination.—‘DrisStrawFiftyTwo’. -   Parentage:     -   -   Female parent.—The proprietary variety ‘9S123’ (unpatented).         -   Male parent.—The proprietary variety ‘140R374’ (unpatented). -   Plant:     -   -   Height.—11.0 cm.         -   Diameter.—23.4 cm.         -   Number of crowns/plant.—2.5.         -   Habit.—Flat — spreading. -   Terminal leaflets:     -   -   Length.—5.65 cm.         -   Width.—5.55 cm.         -   Length/width ratio.—1.0.         -   Number of teeth/terminal leaflet.—21.6.         -   Shape of teeth.—Rounded — crenate.         -   Color.—Upper surface: RHS 147A (Moderate olive green). Lower             surface: RHS 137C (Moderate yellow-green).         -   Shape in cross section.—Slightly concave.         -   Number of leaflets.—Three only.         -   Shape.—Obicular.         -   Base shape.—Rounded.         -   Apex descriptor.—Rounded.         -   Margin.—Entire (smooth).         -   Margin profile.—Revolute (margins rolled backwards).         -   Variegation.—Absent. -   Petiole:     -   -   Length.—6.57 cm.         -   Diameter.—2.8 mm.         -   Pose of hairs.—Upwards.         -   Color.—RHS 144C (Strong yellow-green).         -   Bract frequency (number present on each petiole).—0. -   Petiolule:     -   -   Length.—6.5 mm.         -   Diameter.—2.0 mm.         -   Color.—RHS 145A (Strong yellow-green). -   Stipule:     -   -   Length.—2.57 cm.         -   Width.—9 mm.         -   Stipule anthocyanin coloration.—Absent. -   Stolon:     -   -   Average number of daughter plants per square foot.—2.13.         -   Anthocyanin coloration.—Present.         -   Diameter at bract.—4.55 mm. -   Inflorescence:     -   -   Position relative to foliage.—Above.         -   Flower diameter.—33.7 mm.         -   Petals.—Shape: Obicular. Apex: Rounded. Base:             Concavo-convex. Margin: Entire. Spacing: Overlapping.             Length: 15 mm. Width: 14.7 mm. Length/width ratio: 1.0.             Petal number per flower: 7.4. Color (upper surface): RHS             155C (Greenish white).         -   Calyx.—Diameter: 47.8 mm. Insertion of calyx: Level. Pose of             calyx segments: Spreading — outwards.         -   Sepal.—Shape: Ovate. Apex: Convex. Margin: Entire. Length:             17.4 mm. Width: 11.5 mm. Sepal number: 12.5.         -   Receptacle color.—RHS 3A (Brilliant greenish yellow).         -   Stamen.—Present. Anther color: RHS 22A (Strong             orange-yellow).         -   Pedicel.—Attitude of hairs: Outwards — horizontal.         -   Time of flowering (50% of plants at first flower).—Early. -   Fruiting truss:     -   -   Length.—15.49 cm.         -   Diameter at base of truss.—2.7 mm.         -   Number of berries per fruiting truss.—2.4.         -   Attitude at first picking.—Prostrate.         -   Color at base of truss.—RHS 144A (Strong yellow-green). -   Fruit:     -   -   Length.—47.9 mm.         -   Width.—40.0 mm.         -   Length/width ratio.—1.2.         -   Fruit hollow length.—11.8 mm.         -   Fruit hollow width.—2.7 mm.         -   Fruit hollow length/width ratio.—4.4.         -   Fruit weight.—31.5 g.         -   Predominant fruit shape.—Conical.         -   Fruit skin color.—RHS 46B (Vivid red).         -   Achenes.—Insertion of achenes: Above surface. Coloration             (sunward side of berry): RHS 178B (Dark reddish orange).             Coloration (shaded side of berry): RHS N144B (Strong             yellow).         -   Color of flesh (excluding core).—RHS 44B (Vivid reddish             orange).         -   Color of core.—RHS 37A (Strong yellowish pink).         -   Distribution of flesh color.—Marginal and central.         -   Type of bearing.—Not everbearing — not remontant.         -   Harvest interval.—November.         -   Harvest maturity (beginning of fruit ripening when 50% of             plants have ripe fruit).—Early.         -   Production.—500 grams/plant to 700 grams/plant.

COMPARISON WITH PARENTAL AND COMMERCIAL VARIETIES

When ‘DrisStrawFiftyTwo’ is compared to the female parent ‘9S123’ (unpatented), ‘DrisStrawFiftyTwo’ produces plants with a more compact plant habit, produces larger fruit, and has an earlier production time than ‘9S123’.

When ‘DrisStrawFiftyTwo’ is compared to the male parent ‘140R374’ (unpatented), ‘DrisStrawFiftyTwo’ produces fruit that are smaller and that have a better shelf-life than ‘140R374’.

When ‘DrisStrawFiftyTwo’ is compared to the commercial variety ‘DrisStrawTwelve’ (U.S. Plant Pat. No. 21,538), ‘DrisStrawFiftyTwo’ produces plants that are smaller, produce smaller fruit, and have more fruit per fruiting truss than ‘DrisStrawTwelve’. Additionally, plants of ‘DrisStrawFiftyTwo’ produce fruit with a vivid red skin color and vivid reddish orange flesh, while plants of ‘DrisStrawTwelve’ produce fruit with a dark purple red skin color and flesh that is medium red and white. Moreover, ‘DrisStrawFiftyTwo’ produces plants with a bearing that is not everbearing and not remontant, while ‘DrisStrawTwelve’ produces plants with a bearing that is partially everbearing.

When ‘DrisStrawFiftyTwo’ is compared to the commercial variety ‘DrisStrawForty’ (U.S. Plant Pat. No. 25,747), ‘DrisStrawFiftyTwo’ produces plants that are smaller in height and diameter, and fruits with a smaller fruit hollow than ‘DrisStrawForty’. Additionally, plants of ‘DrisStrawFiftyTwo’ produce fruit with a vivid red skin color and vivid reddish orange flesh. In comparison, plants of ‘DrisStrawForty’ produce fruit with a dark red skin color and dark red and white flesh. Moreover, ‘DrisStrawFiftyTwo’ reaches harvest maturity early in the season, while ‘DrisStrawForty’ reaches harvest maturity at mid-season. 

We claim:
 1. A new and distinct variety of strawberry plant named ‘DrisStrawFiftyTwo’ as shown and described herein. 